Flex :: Implement Singleton Class For Actionscript?
Jul 22, 2010
I know actionscript does not allowed private contstructor at any time and But if i want to write a sinlgleton class in action script So how to implement it in actionscript.
Can anyone provide an sample example of a singleton pattern in actionscript?
I know actionscript does not allowed private contstructor at any time and But if i want to write a sinlgleton class in action script So how to implement it in actionscript.
Can anyone provide an sample example of a singleton pattern in actionscript?
I have a Main class loading 2 SWF (loader and viewer, also with document classes). They need to share a double buffer with content, of course, filled by loader and showed by viewer I was thinking to use the LocalConnection class but after a suggestion from PatrickS now I'm evaluating the possibility of a Singleton Class. I've never used this pattern in AS and must confess I'm rather biased against it.
But in this particular case I guess it'll be useful. By the way, a little bit surprised reading in the gskinner blog 2 implementations examples. So, knowing this subject is an endless war like the Mac vs PC one Take into account:
1. AIR desktop application running 24x7 during some months in a high-end Windows PC. No user interaction
2. High performance code is a must because content loaded are full HD images My other concern is about memory leaks
To start - its best to say im new to Flex / OOP in general. I have been trying to add a custom class based on StrokedElement in order to implement a simple grid (not like the existing Flex Grids - this would just be for display - not holding elements etc...)
My current class looks like this: package ui.helpers { import flash.display.Graphics; import spark.primitives.supportClasses.StrokedElement; public class SGrid extends StrokedElement { public function SGrid() { [Code] .....
I have a java class which has been deployed as WAR web application in a BlazeDS/Spring server sitting on JBOSS. Apart from the Flex application which will access the WAR file, I also need to start some server side process's which will initiate BlazeDS "pushes" to the Flex client via AMF messaging.
What is the best way to implement this server side process? - Should it just be a class with a main() method in the WAR file which gets called from the command line? Can this be done - not sure you can run a class in a WAR file from command line? - Should it just be a class with a main() method in a JAR file which gets called from the command line? Not sure what the standard practise here is. The key is that the process needs to be started on the BlazeDS server to push data out (not on the Flex client).
In the Singleton design pattern you can throw a runtime error if the instance has already been created. But this doesn't work when your singleton class extends another class and has to call super() in its constructor, because (for some reason) you cannot call super() if you've already called throw(), or in fact, you cannot compile code that has a potential call to throw() (for example, in an IF statement) that comes BEFORE that call to super().
I'm trying to load swf from 127.0.0.1 into my main.swf with Flash Pro
Both swfs have Singlenton class
How to make it that loaded swf use Singlenton of main.swf ?
I did ActionScript Code: var lc:LoaderContext = new LoaderContext(); lc.applicationDomain = ApplicationDomain.currentDomain; myLoader.load( new URLRequest("http/127.0.0.1/loaded.swf"),lc);
anyway I have 2 different Singlenton classes one comes with loaded.swf another in main.swf and variables not shared
this is a working singleton class for Tooltips. I want to add a timer in order to delay the tooltips since the way they're instantly popping up is bothering me.
This is the fla:
Code: //Import and Initialise the ToolTip class import ToolTip; ToolTip.show();
I am not able to understand, why a static class cannot replace a Singleton design pattern .
Cannot a static class, can be used to ensure, the class is never/once only, instantiated. Because that is the facility "static" key words provide , however it doesnot allow instantiation, but that is much similar to the limitation of instantiation once only.
I'm making a class that manages all of my updates with a single ENTER_FRAME. I think I should be getting the OnUpdate trace but it doesn't seem to work?[code]
I've got a custom mxml component that currently implements IResponder. Passing this IResponder to a function works fine using this. This, however, includes implementing the public methods result and fault, so I'm asking if it isn't possible to pass a new IResponder to a function, somehow like this: object.function(someProperty:String, new IResponder());
Can I implement more than one interface to the same class?One option is to make interface A extend interface B and than have my class inplementing interface A. Is there any other way that I can implement two or more interfaces directly to the same class?
Quick question. Does a class have to implement a interface directly to be accepted, or can it be a child of a parent class that implements it. so If I pass a child object into a method that only accepts IOBJECT, but the child class parent implements IOBJECT. will child object be accepted ?
How do I implement a listener within a class? I am instantiating other objects within side of another class. A sorta parent and child thing. How do I go about making the parent class subscribe to the child class. I want to leave all of the coding at a class level and keep it off of the main timeline.
Is there any way of extending a class which is extending the movieClip class? Or generally a way to add extra methods to an allready existing class without having to add them in the actual class declaration. I was thinking of using Interfaces but how can I implement an Interface to a class which is extending a movieclip?
Code: import interfaceName class className implements interfaceName{ //stuff } But where do I put the code which extends the MovieClip?
Actually, I already know the answer. The main reason I'm posting it here is for Google searchers, and if I copy and paste the post into my blog, my ActionScript code gets formatted all pretty, when all I have to do is add "as" tags here.
Error: Error #2069: The Loader class does not implement this method. at Error$/throwError() at flash.display::Loader/addChild()
I'm having some trouble implementing a "virtual" camera for use in game development with Flash CS4 ActionScript 3.0.Basically, what I'm trying to accomplish is to have a camera that moves about the main stage so that my character can traverse the level which is much larger in size than the stage itself.I've been using Sham Bhangal's virtual camera script, and when I implemented it by sticking the code into the first frame of a movie clip, it worked great!
From there, I moved the code into a document class that i could instantiate and then drop onto the stage as a child.Finally, I wanted to have a main "builder" document class that would be added to the main stage as a child, and within THIS class I wanted an instance of the virtual camera. This is where I hit some obstacles.how to properly instantiate the virtual camera within the builder class which is then added to the main stage. I have a Stage reference that is being passed to the main builder, but I don't know where to go from here. To what do I add the virtual camera to as a child? To the Stage reference in the main builder class? To the main builder class itself?The main issue is that when I export my movie with the virtual camera added as a child to the Stage reference within the main builder class, it complains that I'm not allowed to access certain values.
Code: Error: Error #2071: The Stage class does not implement this property or method. at Error$/throwError() at flash.display::Stage/set x()
This happens when I try to access parent.x from within the virtual camera class. I assume this fails because "parent" from this perspective is the main builder class, but using the Stage reference produces this same error.I am, of course, willing to provide more detail if something I've written is confusing, and I will gladly provide a detailed fix for those seeking to use a similar solution in the future.
So I've been trying to move the stage's X and Y position and keep on getting this error:
Code: Error: Error #2071: The Stage class does not implement this property or method. at Error$/throwError() at flash.display::Stage/set y() at Main/scroll()
As for why I'm trying to move the stage, I have a movieclip which moves according to keyboard input and i want the stage/Background to always center on him.
I am writing a Flex application for use on a private intranet with no external Internet access. I want to use Google's 3D Maps Flex API, but it must be connected to the internet to download map tiles on demand.
Is there a way to locally cache the 3D map tiles and data so that I can run this app without an internet connection? And if not, is there a 3D GIS that supports Flex integration and allows for a local map cache?